APA استشهاد

Yin, R. K. (1994). Case study research: Design and methods (2 nd ed.). Sage.

استشهاد بنمط شيكاغو

Yin, Robert K. Case Study Research: Design and Methods. 2 nd ed. New Delhi: Sage, 1994.

MLA استشهاد

Yin, Robert K. Case Study Research: Design and Methods. 2 nd ed. Sage, 1994.